<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
    <style>
      div {
        display: flex;
        width: 80%;
        height: 300px;
        background-color: red;
        justify-content: space-around;
      }

      div span {
        /* width: 150px; */
        height: 100px;
        background-color: purple;
        margin-right: 5px;
        flex: 1;
      }
    </style>
  </head>

  <body>
    <div>
      <span>1</span>
      <span>2</span>
      <span>3</span>
    </div>
  </body>
</html>
